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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Stereophile's Sam Tellig posted by chocolate_lover9999@yahoo.com on March 8, 2007 at 18:38:37:
Per the standard rating, a 90 dB efficient speaker will require 64 watts to produce a level of 108 dB. This is not an unusual peak level for a symphony orchestra, depending upon where you are seated. Jazz may be similar and rock can certainly run higher. But more important, this standard is measured one meter from the speaker, fall off in level will be experienced with greater listening distance.In the real world, counter to onemug's experience, my speakers are rated as 90 dB efficient and a 30 wpc SET fell on it's face trying to drive them, even at modest levels. However, mine are rated at 4 ohms but their impedance drops below 3 ohms are two different points within their performance spectrum. Also, they have a complex 1st order crossover. I have used both a 150 wpc at 4 ohms ss amp and a 150 wpc triode tube amp, both of which will play as loud as I might want without and sign of distortion. Still, changing to 800 wpc at 4 ohms brought significant improvements with my speakers (admittedly, factors other than power output are involved here).
So, while I cannot speak for Sam (could anyone?), I think he was offering a simple guideline based on his years of trying various amp/speaker combinations, not an absolute statement.
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Follow Ups
- No absolutes, only guidelines. - M3 lover 11:04:55 03/09/07 (0)
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